Home / 807,712.20-1,212,552.45-408,147.30

Finding the Fourth Proportional to 807,712.20, 1,212,552.45 and 408,147.30

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Solution

The fourth proportional to 807,712.20, 1,212,552.45 and 408,147.30 is: 612,718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,712.20 : 1,212,552.45 = 408,147.30 : x
  2. Step 2: Convert to fraction form
    807,712.20/1,212,552.45 = 408,147.30/x
  3. Step 3: Cross multiply
    807,712.20x = 1,212,552.45 × 408,147.30
  4. Step 4: Simplify right side
    807,712.20x = 494,900,008,575.89
  5. Step 5: Solve for x
    x = 494,900,008,575.89/807,712.20
  6. Step 6: Final answer
    x = 612,718.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.